# and the test will fail.
        expected_headers = {
            'x-request-id': '34eeb41d-d267-9e49-8b84-dde403fc5b72',
            'x-b3-traceid': '80f198ee56343ba864fe8b2a57d3eff7',
            'x-b3-spanid': 'e457b5a2e4d86bd1',
            'x-b3-sampled': '1',
            'sw8': '40c7fdf104e3de67'
        }
        m.get("http://reviews:9080/reviews/%d" % product_id, text='{}',

func a1() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }
func a2() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }
func a3() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }
func a4() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }
func a5() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }
func a6() int { return b1() + b2() + b3() + b4() + b5() + b6() + b7() }

	b2 := NewFileBase("b2", "b2")
	b3 := NewLinePragmaBase(MakePos(b1, 10, 0), "b3", "b3", 123, 0)

	var tab PosTable
	for _, want := range []Pos{
		NoPos,
		MakePos(nil, 0, 0), // same table entry as NoPos
		MakePos(b1, 0, 0),
		MakePos(nil, 10, 20), // same table entry as NoPos
		MakePos(b2, 10, 20),
		MakePos(b3, 10, 20),
		MakePos(b3, 123, 0), // same table entry as MakePos(b3, 10, 20)
	} {
		xpos := tab.XPos(want)

	r2 := mul64(a0, b2)
	r2 = addMul64(r2, a1, b1)
	r2 = addMul64(r2, a2, b0)
	r2 = addMul64(r2, a3_19, b4)
	r2 = addMul64(r2, a4_19, b3)

	// r3 = a0×b3 + a1×b2 + a2×b1 + a3×b0 + 19×a4×b4
	r3 := mul64(a0, b3)
	r3 = addMul64(r3, a1, b2)
	r3 = addMul64(r3, a2, b1)
	r3 = addMul64(r3, a3, b0)
	r3 = addMul64(r3, a4_19, b4)

	// r4 = a0×b4 + a1×b3 + a2×b2 + a3×b1 + a4×b0
	r4 := mul64(a0, b4)

 * prefix. Entries are sorted by their complete code points.
 *
 * The 4 bytes are named b0, b1, b2 and b3. We also define these supplemental values:
 *
 *  * **b2a**: b2 + 0x80
 *  * **b3a**: b3 + 0x80
 *  * **b2b3**: (b2 << 7) + b3
 *
 * b0
 * --
 *
 * The inclusive start of the range. We get the first 14 bits of this code point from the section

        'grpc-trace-bin',

        # b3 trace headers. Compatible with Zipkin, OpenCensusAgent, and
        # Stackdriver Istio configurations.
        # This is handled by opentelemetry above
        # 'x-b3-traceid',
        # 'x-b3-spanid',
        # 'x-b3-parentspanid',
        # 'x-b3-sampled',
        # 'x-b3-flags',

        # SkyWalking trace headers.
        'sw8',

	b2 := namedComponent{b.Field("l2"), "b2"}
	b3 := namedComponent{b.Field("l3"), "b3"}
	b4 := namedComponent{b.Field("l4"), "b4"}

	// r0 = a0×b0 + 19×(a1×b4 + a2×b3 + a3×b2 + a4×b1)
	r0 := uint128{"r0", GP64(), GP64()}
	mul64(r0, 1, a0, b0)
	addMul64(r0, 19, a1, b4)
	addMul64(r0, 19, a2, b3)
	addMul64(r0, 19, a3, b2)
	addMul64(r0, 19, a4, b1)

	// r1 = a0×b1 + a1×b0 + 19×(a2×b4 + a3×b3 + a4×b2)

	VEOR	T2.B16, T0.B16, T0.B16
	VPMULL	POLY.D1, T0.D1, T2.Q1
	VEXT	$8, T0.B16, T0.B16, T0.B16
	VEOR	T2.B16, T0.B16, T0.B16
	VEOR	T1.B16, T0.B16, B2.B16
	VMOV	B2.B16, B3.B16
	VEXT	$8, B2.B16, B2.B16, B2.B16
	VEOR	B2.B16, B3.B16, B3.B16

	VST1	[B2.B16, B3.B16], (pTbl)
	SUB	$2*16, pTbl

	BNE	initLoop
	RET
#undef I
#undef NR
#undef KS
#undef pTbl

00000210  4f 03 d1 2d 90 8e 3f 4b  19 32 2a d6 ba b3 9f b2  |O..-..?K.2*.....|
00000220  ce 77 47 35 0c 5e e5 ea  64 bb 52 79 01 84 4b ee  |.wG5.^..d.Ry..K.|
00000230  b6 4f 0a bc 2f aa af f9  c4 d7 1b 8e c7 58 f1 dc  |.O../........X..|
00000240  84 57 f4 9c 3f 40 e5 27  49 9c 4c a9 98 1b 9a b3  |.W..?@.'I.L.....|
00000250  95 83 7e 32 b7 d8 25 85  4d bf fd 14 88 c0 f7 1c  |..~2..%.M.......|

var s2 *string = &s0
var s3 string = "a"
var s4 *string = &s3

var a0 [10]int
var a1 *[10]int
var a2 *[10]int = &a0

var b0 []int
var b1 *[]int
var b2 *[]int = &b0
var b3 []int = []int{1, 2, 3}
var b4 *[]int = &b3

func crash() {
	// these uses of nil pointers
	// would crash but should type check
	println("crash",
		len(a1)+cap(a1))
}

func nocrash() {
	// this is spaced funny so that